BTW: I just had the enlightenment about thresholds vs. internal vs. external power supply! Of course we can just set the internal voltage to 2.8V, then we're totally fine with V_Tn=0.8V and V_Tp=-0.8V And we of course also put that rail at the Input-Pad. The only trouble will be to convert the 2.8V logic levels to the TTL 5V when emitting it at the output-pad-cell. But that's the reason why they are so fucking big and complicated usually.
Yey! I got it, just while walking to the Mexian restaurant to get me some dinner. ^_^
I will put some explenations into the document.
And now I will tackle SPICE! Thanks for the link!
Cheers David
On Monday, 5 March 2018 5:22:42 AM HKT Hagen SANKOWSKI wrote:
There are a couple of MOSFET Models available, the last one I came across was BSIM4 (for deep-sub-Mircon <100 nm) and BSIM3 which ought to be good enough down to 180 nm.
@David, your Simulator uses the most simplest (and fastest) Model which is know as a first generation model for default.
So, the 3rd generation model, quite more complicated has a couple of more parameters to tune. Here is the documentation from ngspice, btw. the best FOSS spice simulator we can use.
http://ngspice.sourceforge.net/external-documents/models/bsim330_manual.pdf
We need reasonable values for *all* parameters! _______________________________________________ Libre-silicon-devel mailing list Libre-silicon-devel@list.libresilicon.com http://list.libresilicon.com/mailman/listinfo/libre-silicon-devel